Shade



M. PATT Sept. 19, 1933.

SHADE Filed May 24, 1932 III II L f WMV 72g I INVENTOR. Morris Pail. BY

i0 ATTORNEY.

Patented Sept. 19, 1933 UNITED STATES PATENT OFFICE Claims.

This invention relates to a novel kind of shading material; moreparticularly it concerns the adaptation of substantially transparent,flexible sheet material for the purpose of screens, shades,

5 or other articles, which either serve to keep out or diffuse light, orwhich serve as partitions or shades which preven '.e view of articlesplaced or located therebehind.

One object of this invention is to provide flexible shades or screens,which allow substantially free passage of light, but which still do notpermit clear vision therethrough.

Another object of this invention is to fold transparent, flexiblematerials in such a way, so

that it is merely translucent and to provide means to retain the saidmaterial in a shape in which an even translucency and pleasantappearance are preserved.

In order to attain these objects, transparent flexible material, likemica or a cellulose compound like cellulose acetate, is crimped, foldedor pleated, and the pleated material is mounted or spacedly reenforcedin such a manner that the pleats are permanently preserved.

The crimping or pleating makes a transparent sheet material bulkier andit is another object of this invention not to increase such bulkiness bythe means which serve to retain the crimped or pleated material in thedesired shape.

These and other objects will be more fully understood from theaccompanying drawing, in which:

Fig. 1 shows a window in front of which a shade of my invention ispartly drawn.

Fig. 2 shows a transverse cross-section of part of such a shade, whichis reenforced by a binding intermediate to its ends.

Fig. 3 shows, in a detail longitudinal, cross-section, the manner inwhich a crimped'material is bound.

Fig. 4 shows, in a similar view, a modification of the binding.

Fig. 5 shows the shade longitudinally cross- 45 sectioned at a certaindistance from the binding.

Fig. 6 shows an enlarged detailed view of the border of a shade of myinvention.

Similar numerals refer to similar parts throughout the various views:-

In the drawing I show the conventional parts of a window, comprising awindow frame 11, the sill 12, the upper and lower sashes 13 and 14, thesash bars 15, and the panes 16.

In front of that window I show the partly drawn shade 17, whichincorporates my invention, and which is partly rolled up on aconventional roller shade mechanism 18.

The body of the shade is made of a substantially flat material which, initself, allows the free passage of light. As extended before the window,to the shade is however not transparent. The fiat material thereof istransversely pleated, and the pleats obstruct vision through the shade,which thereby becomes translucent.

The shade may be pleated in any manner known; the pleating isexemplarily illustrated in Fig. 5 which shows a transparent material,cellulose acetate for instance, crimped in folds which are customarilytermed crystal pleats, with apices 23; fluted pleats, box pleats, etc.,can of. course be used just as well.

In order to retain the pleat in orderly, spaced fashion, the body of theshade is longitudinally bound. In Figure 1 I show a piping 20 for thatpurpose and it is understood, that for wide curtains or shades, such abinding may be applied intermediate to the sides, as illustrated bybinding 21 in Fig. 2. Here the material of the corrugated or pleatedshade is squashed fiat,--without disturbing the pitch of the adjoiningmaterial,-where the binding 21 and piping 20 are applied thereto, sothat they do substantially not protrude over the outsides of the apicesof the shade material. The binding and piping are exemplarily fastenedon and around the edge of the shade by stitches 22. The manner in whichthe squashed material 19 may fold, is indicated in Figs. 3 and t.

If the pleats or corrugations are very fine, so that the material doesnot become too bulky at right angles to the plane of the sheet, it maybe longitudinally bound by means which do not yieldlongitudinally,-without squashing the pleated material.

Wherf the pleats or corrugations are however bulky, I prefer to squashthe material where it is longitudinally bound, particularly when alongitudinally unyielding binding is to be extended over the shade.

In the case of some materials which are adapted for use in my invention,the pleats are produced in the sheet material under application of heat.

Some materials of this kind, cellulose acetate for instance, may becontrolledly heated to a point where they soften or where the surfacesoftens and becomes sticky or where they begin to flow. In such aninstance the squashed -material, be it folded in the manner of Fig. 3,Fig. 4 or in any other manner, may be heated while being squashed, sothat the folds of the sq m material are glued, or flow together.

The same result may of course be obtained with or without theapplication of heat by the application of a suitable mucilaginousmaterial or cement.

It is also understood that, if the squashed material is bound togetherby cementing or fusion, it may not be necessary to cover up the squashedpart by the bindings 20 and 21 shown in the drawing. It is furtherunderstood that the squashed material, if it is heated to such a degreethat itfiows, may be melted into a suitable head which borders the shadeor extends longitudinally therethrough and which longitudinally bindsthe pleats or corrugations of the shade.

The squashing, where-it is applied intermediate to the sides of theshade, or at the border thereof, does not of course have to follow thestraight longitudinal lines in which it is shown at the piping 20 and atthe binding 21, but it may also be applied in designs which change andwhich may follow a curved line, a zig-zag line for instance. 25 2 WhileI have shown and described my invention with some degree ofparticularity, it will be realized that other modifications and changesmay be resorted to under special conditions. I

mamas therefore do not wish to be limited and restricted to the exactdetails shown and described, but reserve the right to make suchchangesand modiflcationsas may fairly fall within the scope of the subjectmatter now being claimed.

What I claim is:-

1. A translucent shade made or transversely pleated substantiallytransparent material.

2. A translucent shade comprising transversely pleated substantiallytransparent material, and longitudinal sections along which said pleatedmaterial is'squashed and bound.

3. A translucent shade comprising transversely pleated substantialytransparent material, and longitudinal sections along which said pleatedmaterial is squashed, overlapping parts of said squashed material beingbound together.

a. A translucent shade comprising transversely pleated substantiallytransparent material, and longitudinal sections along which said pleatedmaterial is squashed, overlapping parts of said squashed material beingcemented together.

5. A translucent shade comprising transversely pleated substantiallytransparent material, and longitudinal sections along which said pleatedmaterial is squashed, overlapping parts of said squashed material beingfused together.

MORRIS PA'IT.

